TEST REPORT

FCC ID: SK9AMI-1

Test Report

Download: PDF

FCCID_712476

Table of Contents
1.0 General 3
1.1 Purpose 3
1.2 Product Description 3
1.2.1 General 3
1.2.2 Intended Use 3
1.3 Test Methodology and Considerations 3
2.0 Test Facilities 4
2.1 Location 4
2.2 Laboratory Accreditations/Recognitions/Certifications 4
2.3 Radiated Emissions Test Site Description 5
2.3.1 Semi-Anechoic Chamber Test Site 5
2.3.2 Open Area Tests Site (OATS) 6
2.4 Conducted Emissions Test Site Description 7
3.0 Applicable Standards and References 7
4.0 List of Test Equipment 8
5.0 Support Equipment 9
6.0 EUT Setup Block Diagram 9
7.0 Summary of Tests 10
7.1 Section 15.203 - Antenna Requirement 10
7.2 Section 15.207 – Power Line Conducted Emissions 10
7.2.1 Test Methodology 10
7.2.2 Test Results 10
7.3 Section 15.109 - Radiated Emissions (Unintentional Radiation) 11
7.3.1 Test Methodology 11
7.3.2 Test Results 11
7.4 Section 15.215 – Occupied Bandwidth 12
7.4.1 Test Methodology 12
7.4.2 Test Results 12
7.5 Section 15.249 – Band-edge Compliance and Spurious Emissions 13
7.5.1 Band-edge Compliance 13
7.5.1.1 Test Methodology 13
7.5.1.2 Duty Cycle Correction 13
7.5.1.3 Test Results 14
7.5.2 Radiated Spurious Emissions 14
7.5.2.1 Test Methodology 14
7.5.2.2 Test Results 15
7.5.2.3 Sample Calculations 15
8.0 CONCLUSION 15

Additional Exhibits Included In Filing

Internal Photographs Installation/Users Guide
External Photographs Theory of Operation
Test Setup Photographs BOM (Parts List)
Product Labeling System Block Diagram
RF Exposure – MPE Calculations Schematics

5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

1.0 GENERAL

1.1 Purpose
The purpose of this report is to demonstrate compliance with Part 15, Subpart C of the FCC’s Code
of Federal Regulations.

1.2 Product Description

1.2.1 General
The CENTRON OpenWay meter is used for measuring electrical energy consumption. The
CENTRON OpenWay meter incorporates a two-piece design combining a base metrology with a
variety of OpenWay registers or options. The metrology portion of the meter contains all
measurement circuitry and calibration information, while the personality modules contain the
register functionality and communication mediums.

Each version of the meter is distinguished by the various personality modules or option boards
that mount to the standard meter metrology base. The CENTRON OpenWay meter is also
available with a remote disconnect which is located in the bottom of the meter housing. The
CENTRON OpenWay meter is available in the following model types:

- Standard-CVSO
- Integrated disconnect/reconnect - CVSOD
- Integrated cell relay – CVSOC (Includes GPRS, Ethernet, and GPRS+Ethernet sub
assemblies)

For all model types, the register boards contain (1) 900 MHz LAN frequency hopping spread
spectrum radio an (1) 2.4 GHz direct sequence spread spectrum Zigbee radio. Regardless of the
meter model type and sub assembly, the register boards are electrically identical. The CVSOC
can also incorporate a pre-approved 850/1900 GPRS modem module FCC ID: MIVGSM0108.

Manufacturer Information:
Itron Electricity Metering, Inc.
313 North Highway 11
West Union, SC 29696

Detailed photographs of the EUT are filed separately with this filing.

1.2.2 Intended Use
The CENTRON OpenWay meter is used for measuring electrical energy consumption.

1.3 Test Methodology and Considerations
Considering that the RF portion (register boards) are electrically identical between all models and
subassemblies, the CVSO, CVSOD and CVSOC were tested and submitted under one FCC ID.
Radiated emissions for all transmitters were performed on all models and sub assemblies and the
worst case data presented in this report. Receiver radiated emissions and AC power line conducted
emissions were also tested for all models and sub assemblies and operating voltages and the worst
case data presented in this report.

Radiated inter-modulation products were evaluated with all radios operating simultaneously. This
includes the additional GPRS modem module integrated in model CVSOC as described in section
1.2.

This device is considered a composite device by definition. The 900 MHz LAN radio operates under
CFR 47 Part 15.247 and the 2.4 GHz Zigbee radio operates under CFR 47 Part 15.249. This report
addresses Part 15.249 for the 2.4 GHz Zigbee radio only and a separate report will be issued for Part
15.247 in reference to the 900 MHz radio.

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 3

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

2.0 TEST FACILITIES

2.1 Location
The radiated and conducted emissions test sites are located at the following address:

Advanced Compliance Solutions
5015 B.U. Bowman Drive
Buford, GA 30518
Phone: (770) 831-8048
Fax: (770) 831-8598

2.2 Laboratory Accreditations/Recognitions/Certifications
The Semi-Anechoic Chamber Test Site, Open Area Test Site (OATS) and Conducted Emissions Site
have been fully described, submitted to, and accepted by the FCC, Industry Canada and the
Japanese Voluntary Control Council for Interference by information technology equipment. In
addition, ACS is compliant to ISO 17025 as certified by the National Institute of Standards and
Technology under their National Voluntary Laboratory Accreditation Program. The following
certification numbers have been issued in recognition of these accreditations and certifications:

FCC Registration Number: 89450
Industry Canada Lab Code: IC 4175
VCCI Member Number: 1831
VCCI OATS Registration Number R-1526
VCCI Conducted Emissions Site Registration Number: C-1608
NVLAP Lab Code: 200612-0

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 4

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

2.3 Radiated Emissions Test Site Description

2.3.1 Semi-Anechoic Chamber Test Site
The Semi-Anechoic Chamber Test Site consists of a 20’ x 30’ x 18’ shielded enclosure. The
chamber is lined with Toyo Ferrite Grid Absorber, model number FFG-1000. The ferrite tile grid
is 101 x 101 x 19mm thick and weighs approximately 550 grams. These tiles are mounted on
steel panels and installed directly on the inner walls of the chamber.

The turntable is 150cm in diameter and is located 160cm from the back wall of the chamber. The
chamber is grounded via 1 - 8’ copper ground rod, installed at the center of the back wall, it is
bound to the ground plane using 3/4" stainless steel braided cable.

The turntable is all steel, flush mounted table installed in an all steel frame. The table is remotely
operated from inside the control room located 25’ from the range. The turntable is electrically
bonded to the surrounding ground plane via steel fingers installed on the edge of the turn table.
The steel fingers make constant contact with the ground plane during operation.

Behind the turntable is a 3’ x 6’ x 4’ deep shielded pit used for support equipment if necessary.
The pit is equipped with 1 - 4” PVC chases from the turntable to the pit that allow for cabling to
the EUT if necessary. The underside of the turntable can be accessed from the pit so cables can
be supplied to the EUT from the pit.

A diagram of the Semi-Anechoic Chamber Test Site is shown in Figure 2.3-1 below:

3 Meters

5 Feet
Diamete
r

20 Feet

30 Feet

Figure 2.3-1: Semi-Anechoic Chamber Test Site

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 5

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

2.3.2 Open Area Tests Site (OATS)
The open area test site consists of a 40’ x 66’ concrete pad covered with a perforated electro-
plated galvanized sheet metal. The perforations in the sheet metal are 1/8” holes that are
staggered every 3/16”. The individual sheets are placed to overlap each other by 1/4” and are
riveted together to provide a continuous seam. Rivets are spaced every 3” in a 3 x 20 meter
perimeter around the antenna mast and EUT area. Rivets in the remaining area are spaced as
necessary to properly secure the ground plane and maintain the electrical continuity.

The entire ground plane extends 12’ beyond the turntable edge and 16’ beyond the antenna mast
when set to a 10 meter measurement distance. The ground plane is grounded via 4 - 8’ copper
ground rods, each installed at a corner of the ground plane and bound to the ground plane using
3/4" stainless steel braided cable.

The turntable is an all aluminum 10’ flush mounted table installed in an all aluminum frame. The
table is remotely operated from inside the control room located 40’ from the range. The turntable
is electrically bonded to the surrounding ground plane via steel fingers installed on the edge of
the turn table. The steel fingers make constant contact with the ground plane during operation.

Adjacent to the turntable is a 7’ x 7’ square and 4’ deep concrete pit used for support equipment if
necessary. The pit is equipped with 5 - 4” PVC chases from the pit to the control room that allow
for cabling to the EUT if necessary. The underside of the turntable can be accessed from the pit
so cables can be supplied to the EUT from the pit. The pit is covered with 2 sheets of 1/4"
diamond style re-enforced steel sheets. The sheets are painted to match the perforated steel
ground plane; however the underside edges have been masked off to maintain the electrical
continuity of the ground plane. All reflecting objects are located outside of the ellipse defined in
ANSI C63.4.

A diagram of the Open Area Test Site is shown in Figure 2.3-2 below:

10

3 Meters

40

7x7x4
Pit

66 Feet

Figure 2.3-2: Open Area Test Site

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 6

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

2.4 Conducted Emissions Test Site Description
The AC mains conducted EMI site is located in the main EMC lab. It consists of an 8’ x 8’ solid
aluminum horizontal group reference plane (GRP) bonded every 3” to an 8’ X 8’ vertical ground
plane.

The site is of sufficient size to test table top and floor standing equipment in accordance with
section 6.1.4 of ANSI C63.4.

A diagram of the room is shown below in figure 4.1.3-1:

Vertical Ground Plane (8’ x 8’)

Non-Conductive EUT Table
(1m x 1.5m x .8m)

.4 Meters

.8 Meters

Horizontal Ground Plane (8’ x 8’)

LISN
Figure 2.4-1: AC Mains Conducted EMI Site

3.0 APPLICABLE STANDARD REFERENCES
The following standards were used:

ANSI C63.4-2003: Method of Measurements of Radio-Noise Emissions from Low-Voltage Electrical and
Electronic Equipment in the 9KHz to 40GHz
US Code of Federal Regulations (CFR): Title 47, Part 2, Subpart J: Equipment Authorization Procedures,
2005
US Code of Federal Regulations (CFR): Title 47, Part 15, Subpart C: Radio Frequency Devices, Intentional
Radiators, 2005
FCC OET Bulletin 65 Appendix C - Evaluating Compliance with FCC Guidelines for Human Exposure to
Radiofrequency Electromagnetic Fields, 2001

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 7

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

5.0 SUPPORT EQUIPMENT

Table 5-3: Support Equipment
Manufacturer Equipment Type Model Number Serial Number FCC ID

EUT Was Self Supporting

6.0 EQUIPMENT UNDER TEST SETUP BLOCK DIAGRAM

120-240 VAC

Figure 6-1: EUT Test Setup

*See Test Setup photographs for additional detail.

*Note: The meter base is auto ranging and can be used on 120 – 240V lines. Testing was performed on
all meter bases for AC power line conducted emissions and radiated emissions.

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 9

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

7.0 SUMMARY OF TESTS
Along with the tabular data shown below, plots were taken of all signals deemed important enough to
document.

7.1 Antenna Requirement - FCC Section 15.203
The antenna is a PCB integrated single-band slot antenna which can not be altered without destroying
the device. This device meets the requirements of CFR 47 Part 15.203. The antenna gain is 4dBi.

7.2 Power Line Conducted Emissions - FCC Section 15.207

7.2.1 Test Methodology
ANSI C63.4 sections 6 and 7 were the guiding documents for this evaluation. Conducted emissions were
performed from 150kHz to 30MHz with the spectrum analyzer’s resolution bandwidth set to 9kHz and the
video bandwidth set to 30kHz. The calculation for the conducted emissions is as follows:

Corrected Reading = Analyzer Reading + LISN Loss + Cable Loss
Margin = Applicable Limit - Corrected Reading

7.2.2 Test Results
Results represent the worst case data from all models variants. Results of the test are shown below in
and Tables 7.2.2-1 through 7.2.2-2.

Table 7.2.2-1: Conducted EMI Results 120V
Total
Uncorrected Reading
Frequency Correction Corrected Level (dBuV) Limit (dBuV) Margin (dB)
(dBuV)
(MHz) Factor
(dB)
Quasi-Peak Average Quasi-Peak Average Quasi-Peak Average Quasi-Peak Average
Use Only From 100kHz to 30MHz
Line 1
0.17 40.1 34.9 9.80 49.90 44.70 64.96 54.96 15.1 10.3
0.23 38.2 32 9.80 48.00 41.80 62.45 52.45 14.4 10.6
0.33 35.2 27.5 9.80 45.00 37.30 59.45 49.45 14.5 12.2
0.84 27.8 19.3 9.80 37.60 29.10 56.00 46.00 18.4 16.9
1.52 34.6 27.6 9.80 44.40 37.40 56.00 46.00 11.6 8.6
1.61 30.4 22.5 9.80 40.20 32.30 56.00 46.00 15.8 13.7
1.71 38.7 20.8 9.80 48.50 30.60 56.00 46.00 7.5 15.4
1.84 36.2 28 9.80 46.00 37.80 56.00 46.00 10.0 8.2
2.03 26.1 15.2 9.80 35.90 25.00 56.00 46.00 20.1 21.0
Line 2
0.17 40.3 34.9 9.80 50.10 44.70 64.96 54.96 14.9 10.3
0.23 38.5 32.4 9.80 48.30 42.20 62.45 52.45 14.1 10.2
0.33 35.6 28.7 9.80 45.40 38.50 59.45 49.45 14.1 11.0
0.84 27.6 21.4 9.80 37.40 31.20 56.00 46.00 18.6 14.8
1.52 34.4 20.1 9.80 44.20 29.90 56.00 46.00 11.8 16.1
1.68 39.2 28.8 9.80 49.00 38.60 56.00 46.00 7.0 7.4
1.71 30.3 20.8 9.80 40.10 30.60 56.00 46.00 15.9 15.4
1.84 36.1 24.8 9.80 45.90 34.60 56.00 46.00 10.1 11.4
2.01 27 15.7 9.80 36.80 25.50 56.00 46.00 19.2 20.5

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 10

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

Table 7.2.2-2: Conducted EMI Results 240V
Total
Uncorrected Reading
Frequency Correction Corrected Level (dBuV) Limit (dBuV) Margin (dB)
(dBuV)
(MHz) Factor
(dB)
Quasi-Peak Average Quasi-Peak Average Quasi-Peak Average Quasi-Peak Average
Use Only From 100kHz to 30MHz
Line 1
0.17 41.3 33.1 9.80 51.10 42.90 64.96 54.96 13.9 12.1
0.23 40.8 31.5 9.80 50.60 41.30 62.45 52.45 11.8 11.1
0.33 39.8 29.5 9.80 49.60 39.30 59.45 49.45 9.9 10.2
0.43 38 25.7 9.80 47.80 35.50 57.25 47.25 9.5 11.8
0.53 36.4 25.1 9.80 46.20 34.90 56.00 46.00 9.8 11.1
1.1 25 15.3 9.80 34.80 25.10 56.00 46.00 21.2 20.9
1.42 23.5 17.1 9.80 33.30 26.90 56.00 46.00 22.7 19.1
1.71 36.3 27.7 9.80 46.10 37.50 56.00 46.00 9.9 8.5
1.87 38.5 27.2 9.80 48.30 37.00 56.00 46.00 7.7 9.0
2 33.7 21 9.80 43.50 30.80 56.00 46.00 12.5 15.2
Line 2
0.17 29 21.2 9.80 38.80 31.00 64.96 54.96 26.2 24.0
0.23 40.7 31.9 9.80 50.50 41.70 62.45 52.45 11.9 10.7
0.33 39.7 28.1 9.80 49.50 37.90 59.45 49.45 10.0 11.6
0.47 37.4 24.5 9.80 47.20 34.30 56.51 46.51 9.3 12.2
0.52 36.5 24.3 9.80 46.30 34.10 56.00 46.00 9.7 11.9
1.37 26 20.1 9.80 35.80 29.90 56.00 46.00 20.2 16.1
1.86 38.8 27.7 9.80 48.60 37.50 56.00 46.00 7.4 8.5
2.01 38.9 27.9 9.80 48.70 37.70 56.00 46.00 7.3 8.3

7.3 Radiated Emissions - FCC Section 15.109(Unintentional Radiation)

7.3.1 Test Methodology
Radiated emissions tests were performed over the frequency range of 30MHz to 15 GHz. Measurements
of the radiated field strength were made at a distance of 3m from the boundary of the equipment under
test (EUT) and the receiving antenna. The antenna height was varied from 1m to 4m so that the
maximum radiated emissions level would be detected. Radiated measurements were made with the
Spectrum Analyzer’s resolution bandwidth set to 120 KHz for measurements above 30MHz. Average
measurements are taken with the RBW and VBW were set to 1MHz and 10 Hz respectively for
measurements above 1000MHz.

7.3.2 Test Results
Results represent the worst case data from all models and operating voltages. Results of the test are
given in Table 7.3.2-1 below:

Table 7.3.2-1: Radiated Emissions Tabulated Data
Level Antenna Correction Corrected Level Limit Margin
Frequency
(dBuV) Polarity Factors (dBuV/m) (dBuV/m) (dB)
(MHz)
pk Qpk/Avg (H/V) (dB) pk Qpk/Avg pk Qpk/Avg pk Qpk/Avg
32.58 52.64 V -15.23 --------- 37.41 -------- 40.0 --------- 2.59
41.55 54.00 V -16.46 --------- 37.54 -------- 40.0 --------- 2.46
47.76 43.58 V -16.38 --------- 27.20 -------- 40.0 --------- 12.80
50.4 51.00 V -16.15 --------- 34.85 -------- 40.0 --------- 5.15
58.71 47.74 V -15.67 --------- 32.07 -------- 40.0 --------- 7.93
143.27 54.34 H -13.44 --------- 40.90 -------- 43.5 --------- 2.60
145.4 50.60 H -13.16 --------- 37.44 -------- 43.5 --------- 6.06
249.9 46.98 H -10.71 --------- 36.27 -------- 46.0 --------- 9.73
1320 49.21 43.22 H -5.70 43.51 37.52 74.0 54.0 30.49 16.48
1320 48.57 41.26 V -5.43 43.14 35.83 74.0 54.0 30.86 18.17
2640 49.23 41.79 H 1.05 50.28 42.84 74.0 54.0 23.72 11.16
2640 49.31 41.72 V 0.77 50.08 42.49 74.0 54.0 23.92 11.51
3950 48.19 41.11 H 5.47 53.66 46.58 74.0 54.0 20.34 7.42
3950 46.74 36.92 V 5.64 52.38 42.56 74.0 54.0 21.62 11.44
5280 46.97 41.90 H 8.70 55.67 50.60 74.0 54.0 18.33 3.40
5280 47.07 36.53 V 8.90 55.97 45.43 74.0 54.0 18.03 8.57
* Note: All emissions above 5280 MHz were attenuated below the permissible limit.
ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 11

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

7.4 Occupied Bandwidth - FCC Section 15.215

7.4.1 Test Methodology
ANSI C63.4 Annex H was the guiding document for this evaluation. Radiated measurements were made
with the Spectrum Analyzer’s resolution bandwidth set to 100kHz.

Intentional radiators operating under the alternative provisions to the general emission limits as contained
in Sec. Sec. 15.217 through 15.257 and in Subpart E of this part, must be designed to ensure that the 20
dB bandwidth of the emission, or whatever bandwidth may otherwise be specified in the specific rule
section under which the equipment operates, is contained within the frequency band designated in the
rule section under which the equipment is operated.

7.4.2 Test Results
The maximum 20dB bandwidth was determined to be 2.67 MHz. The frequency band designated under
Part 15.249 is 2400-2483.5 MHz, therefore the 20dB bandwidth is contained within the frequency band
designated under this rule part. Test results are shown in Figure 7.4.2-1 to 7.4.2-3 below.

* RBW 100 kHz Marker 1 [T1 ]
VBW 300 kHz 90.83 dBµV
Ref 97 dBµV Att 20 dB SWT 2.5 ms 2.405430000 GHz

1 ndB [T1] 20.00 dB
90 BW 2.670000000 MHz
Temp 1 [T1 ndB] A

70.52 dBµV
1 PK
80 2.403550000 GHz
MAXH
Temp 2 [T1 ndB]
T1 T2
70.77 dBµV
70
2.406220000 GHz

60

50

40

30

20

10

0

Center 2.405 GHz 500 kHz/ Span 5 MHz

Date: 24.AUG.2006 10:33:07

Figure 7.4.2-1 – Low Channel

* RBW 100 kHz Marker 1 [T1 ]
VBW 300 kHz 90.58 dBµV
Ref 97 dBµV Att 20 dB SWT 2.5 ms 2.440140000 GHz

1 ndB [T1] 20.00 dB
90 BW 2.650000000 MHz
Temp 1 [T1 ndB] A

70.43 dBµV
1 PK
80 2.438560000 GHz
MAXH
Temp 2 [T1 ndB]
T1 T2
70.93 dBµV
70
2.441210000 GHz

60

50

40

30

20

10

0

Center 2.44 GHz 500 kHz/ Span 5 MHz

Dat e: 24 .AUG. 2006 10: 25:32

Figure 7.4.2-2 – Mid Channel

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 12

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

* RBW 100 kHz Marker 1 [T1 ]
VBW 300 kHz 89.70 dBµV
Ref 97 dBµV Att 20 dB SWT 2.5 ms 2.480140000 GHz

1
ndB [T1]
BW
20.00 dB
2.630000000 MHz
*
90
Temp 1 [T1 ndB] A

69.38 dBµV
1 PK
80 2.478560000 GHz
VIEW
Temp 2 [T1 ndB]
T1 T2 70.07 dBµV
70
2.481190000 GHz

60

50

40

30

20

10

0

Center 2.4801 GHz 500 kHz/ Span 5 MHz

Date: 24.AUG.2006 09:43:08

Figure 7.4.2-3 – High Channel

7.5 Band-Edge Compliance and Spurious Emissions - FCC Section 15.249

7.5.1 Band-Edge Compliance

7.5.1.1 Test Methodology
The EUT was investigated at the low and high channels of operation to determine band-edge compliance.
Band-edge compliance for the lower and upper band-edge was determined using the radiated mark-delta
method as outlined in FCC DA 00-705. The radiated field strength of the fundamental emission was first
determined and then the mark-delta method was used to determine the field strength of the band-edge
emissions.

7.5.1.2 Duty Cycle Correction
For average radiated measurements, the measured level was reduced by a factor 37.1dB to account for
the duty cycle of the EUT. The duty cycle was determined to be 1.4% or 1.4ms with a 100ms period.
The duty cycle correction factor is determined using the formula: 20log (0.014) = -37.1dB. The duty cycle
is displayed below in Figure 7.5.1.2-1.
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 0.02 dB
Ref 97 dBµV Att 20 dB SWT 2.5 ms 1.375000 ms
1 1
Marker 1 [T1 ]
92.51 dBµV
*
90
71.044888 as A

1 PK
80
VIEW

70

60

50

40

30

20

10

0

Center 2.48042 GHz 250 µs/

Date: 24.AUG.2006 10:11:23

Figure 7.5.1.2-1: Duty Cycle

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 13

Model(s): CVSO, CVSOD, CVSOC FCC ID: SK9AMI-1

7.5.2.2 Test Results
Radiated spurious emissions found in the band of 30MHz to 25GHz are reported in Table 7.5.2.2-1. Only
the fundamental emission of the transmitter was detected above the noise floor of the measurement
system.

Inter-modulation products were examined with all transmitters described in Section 1.0 operating
simultaneously and were found to be in compliance.

Table 7.5.2.2-1: Radiated Spurious Emissions
Level (dBuV) Antenna Correction Corrected Level Limit Margin
Frequency
Polarity Factors (dBuV/m) (dBuV/m) (dB)
(MHz)
pk Qpk/Avg (H/V) (dB) pk Qpk/Avg pk Qpk/Avg pk Qpk/Avg
Low Channel
2405 94.51 94.51 H 0.21 94.72 57.64 114.0 94.0 19.26 36.34
2405 96.36 96.36 V -0.12 96.24 59.16 114.0 94.0 17.74 34.81
Mid Channel
2440 93.17 93.17 H 0.36 93.53 56.45 114.0 94.0 20.45 37.53
2440 96.24 96.24 V 0.01 96.25 59.17 114.0 94.0 17.73 34.81
High Channel
2480 89.58 89.58 H 0.53 90.11 53.03 114.0 94.0 23.87 40.95
2480 94.31 94.31 V 0.15 94.46 57.38 114.0 94.0 19.52 36.60

7.5.2.3 Sample Calculation:

RC = RU + CFT

Where:
CFT = Total Correction Factor (AF+CA+AG)-DC (Average Measurements Only)
RU = Uncorrected Reading
RC = Corrected Level
AF = Antenna Factor
CA = Cable Attenuation
AG = Amplifier Gain
DC = Duty Cycle Correction Factor

Example Calculation

PEAK: Fundamental
Corrected Level: 94.51+ 0.21= 94.72dBuV
Margin: 114dBuV – 94.72dBuV = 16.28dB

AVERAGE: Fundamental
Corrected Level: 94.51+ 0.21-37.1= 57.64dBuV
Margin: 94dBuV – 57.64dBuV = 36.36dB

* Note: The Duty cycle correction is presented in section 7.5.1.2 above.

8.0 CONCLUSION
In the opinion of ACS, Inc. the CVSO, CVSOD, CVSOC, manufactured by Itron Electricity Metering
Inc.meets the requirements of FCC Part 15 subpart C.

END REPORT

ACS Report: 06-0239-15C-DXX Advanced Compliance Solutions Page 15

Document Created: 2006-09-28 14:13:33
Document Modified: 2006-09-28 14:13:33

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC